trampn.徒步；流浪汉；淫妇；重脚步声v.践踏；步行tramp metal detector夹杂金属检查器tramp bill of lading[经] 不定期货船提单trampling disturbance碾压干扰tramps and mendicants流浪乞讨tramp-iron rejector金属夹杂物分离器,铁质夹杂物排除器Trampoline Gymnastics蹦床tramp under one's foot支撑剂嵌入tramp under one's feet壬酸丙酯tramplanting mechanism插草机构tramp-iron separator磁吸法分离废铁机